We use a toilet paper cardboard roll or a papertowel cardboard roll and smear peanut butter on it then roll it in birdseed that is in a shallow pan (place remaining birdseed outside for them to enjoy). My 2 year old loves to do these because they are very simple, they recycle the cardboard rolls and they help feed the birdies during the winter months. I should also say I poke two holes across from each other at the top of the cardboard roll and loop yard through them to make the hanging loop.

My daughter made a birdfeeder in preschool with a pine cone. They smeared peanut butter all over the pine cone and then rolled it around in birdseed, tied a string around it and we put it outside for the bords to enjoy. It was so cute! Just thought I would pass that idea along as well. Thanks!